Students can Download Chapter 14 Symmetry Ex 14.2, Question and Answers, Notes Pdf, KSEEB Solutions for Class 7 Maths, Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations.

## Karnataka State Syllabus Class 7 Maths Chapter 14 Symmetry Ex 14.2

Question 1.

Which of the following figures have rotational symmetry of order more than 1:

Solution:

(a), (b), (d), (e), and (f) because these objects look exactly the same more than 1 number of times in a complete turn.

Question 2.

Give the order of rotational symmetry for each figure :

Solution:

fig a has order 2

a) This object while rotating at two positions 180° and 360° it looks exactly the same. Therefore it has rotational symmetry of order 2.

b) This object in full turn, these are two positions 180° and 360° it looks exactly the same. Therefore it has rotational symmetry of order 2.

fig b has order 2

c) This object while rotating there are three positions 120° and 240° and 360° the object looks exactly the same. Therefore it has rotational symmetry of order 3. fig c has order 3

d) In full turn, this object will rotate and three are four positions such as 90°, 180° 270°, and 360° the figure looks exactly the same. Therefore it has rotational symmetry of order 4.

e) In a full turn, this object will rotate and there are four positions such as 90°, 180° 270°, and 360°, the figure looks exactly the same. Therefore it has rotational symmetry of order 4.

fig e has order 4

f) The figure is a regular pentagon. In a full turn are five positions at 72°, 144°, 216°, 288°, and 360° the figure looks exactly the same. Therefore it has rotational symmetry of order 5.

fig f has order 5

g) In a full turn, there are 6 positions. i.e., 60°, 120°, 180°, 240°, 300°, and 360° the figure looks exactly the same. Therefore it has rotational symmetry of order 6.

fig g has order 6

h) This figure while rotating there are 3 positions the figure looks exactly the same at 120°, 240°, and 360°. Therefore it has rotational symmetry of order 3.

fig h has order 3